When a gas expands adiabatically, 171) A) it does no work. B) the internal (thermal) energy of the gas increases. C) the temperature of the gas remains constant. D) the internal (thermal) energy of the gas decreases. E) work is done on the gas.

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above